Atypical Chemical Profiles of Wild Yarrow (Achillea millefolium L.) Essential Oils

Chemical composition of yarrow (Achillea millefolium L. ssp. millefolium ) essential oils was presented in the study. Plant material was collected at four populations where two forms, white ( f. millefolium ) and pink ( f. rosea) of A. millefolium L. are growing together (in Lithuania). The essential oils of different plant organs (inflorescences and leaves) were obtained by hydro-distillation and analyzed by GC and GC/MS. The application of PCA and AHC grouped the sixteen oils into seven segments, that allowed to distinguish four new chemical profiles of yarrow essential oils. For the first time, atypical chemotypes with predominant cis-chrysanthenol (27.3%), selin-11-en-4 a -ol (24.0%), viridiflorol (13.7%) and 10-epi-γ-eudesmol (10.0-15.6%, three samples) have been described for yarrow leaf oils.